JPH07128184A - Axial deviation inspection instrument for multi-fiber connector - Google Patents

Abstract

PURPOSE:To provide an axial deviation inspector which enables highly accurate inspection of axial deviation by allowing positioning of a multi-fiber connector at a connector mounting part thereof at a high accuracy without being affected by a clearance between a pin-insertion hole and a pin for measurement. CONSTITUTION:In this axial deviation inspection instrument of a multi-fiber connector, a multi-fiber connector 4 having two pin insertion holes 2 and a plurality of fiber insertion holes 3 formed thereon is fitted into a connector mounting part 5 to inspect a value of axial deviation of an optical fiber or the like which is inserted through the fiber insertion holes 3. The connector mounting part 5 is provided with two pins for measurement parallel with the two pin insertion holes of the multi-fiber connector 4 and at an interval differing from a product reference value between the pin insertion holes 2. The connector mounting part 5 is also provided with two pins for measurement so as to be inclined in the direction of the axis line thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inspecting a fiber insertion hole of a multi-core connector for axial misalignment.

[0002]

2. Description of the Related Art In a multi-core connector, as shown in FIG. 8, a plurality of fiber insertion holes B are formed in a connector housing A at a constant array pitch, and a pair of pins for inserting positioning guide pins on both outer sides thereof. The insertion hole C is formed. And
For example, a plurality of optical fibers such as a tape fiber D is inserted into each of the plurality of fiber insertion holes B to expose the tip end face (butt end face) of each optical fiber to the butt end face E of the connector. Each fiber is fixed to each fiber insertion hole B with an adhesive.

The multi-core connector as described above has a pin insertion hole C.
And the guide pins are fitted into the pin insertion holes of the mating multi-core connector which is to be coupled with this multi-core connector, whereby the abutting end faces E of both multi-core connectors are abutted and coupled with each other. The abutting end faces of the optical fibers inserted and fixed in the multi-core connector are optically coupled.

There are ceramic and metal connectors in the conventional multi-core connector, and the fiber insertion hole B or the pin insertion hole C is used.
There is also a V-shaped groove.

In such a multi-core connector, it is important to minimize the connection loss caused by the butt connection with another multi-core connector. For that purpose, it is necessary to precisely form the shape and the center position of the fiber insertion hole B in the submicron order with the pin insertion hole C as a reference.

Along with the above-mentioned precision processing, from the viewpoint of quality control (for example, quality judgment) of optical parts, an optical fiber is inserted into the fiber insertion hole B and temporarily fixed or adhesively fixed to each light. It was necessary to inspect for fiber misalignment.

When inspecting the axis deviation of the optical fiber,
Conventionally, guide pins are inserted into the two pin insertion holes C of two connectors that are butted against each other to position and combine both multi-core connectors, measure connection loss, and use multi-core connectors with guide pins. Positioning at a predetermined position, the light output from the optical fiber is received by a position detection sensor, and the axis deviation is measured to inspect the axis deviation of the optical fiber in the multi-fiber connector.

[0008]

The above-mentioned method of measuring the axis deviation has the following problems. ． In the above-mentioned axis deviation measuring method, the light output from the optical fiber inserted in the fiber insertion hole C of the multi-core connector or the light incident on the fiber insertion hole B passes through the optical system, and the position detection sensor on the light receiving side ( Since the position of the fiber insertion hole B is detected by being incident on the PSD, accurate measurement cannot be performed unless the multicore connector is accurately positioned at a predetermined position according to this measurement principle.

[0009]. The positioning is performed with reference to the guide pin, but in the case of a multi-core connector, for example, the pin insertion hole C
Inner diameter of 0.700mm, outer diameter of guide pin is 0.69
Since it is set to 9 mm, there is a clearance of about 1 μm between the guide pin and the pin insertion hole C. Further, since the guide pin of the multi-core connector is positioned by abutting the inner wall surface of the pin insertion hole C at any position of the pin insertion hole C, the guide pin is fitted into the pin insertion hole C with its center as a reference. When mated, the variation in the center of the guide pin is ± 0.5 μm at the maximum, and the amount of axial misalignment with the mating optical connector to be coupled is ± 1 μm at the maximum. For example, the outer diameter is 125 μm, the mode field diameter is 1
The connection loss is about 0.2 dB in a 0 μm single mode fiber, which is a size that cannot be ignored. Therefore, due to the clearance between the guide pin and the pin insertion hole C, when the multi-core connector is attached to the connector mounting portion of the inspection device, an axis deviation has already occurred, and every time many multi-core connectors to be measured are replaced with the connector mounting portion. The amount of misalignment is different, the reproducibility of measured values is poor, and accurate misalignment measurement becomes difficult.

[0010]. As a simple method to eliminate the clearance, there is a method to increase the pin diameter of the guide pin used for positioning, but in this measuring method, the diameter of the pin insertion hole depends on the multi-core connector to be measured, and the pitch of the two pin insertion holes. There may be some multi-core connectors that cannot be measured due to slight variations in

An object of the present invention is to position and attach a multi-core connector to be measured with high accuracy to a connector attaching portion of an axis deviation inspection device without being influenced by a clearance between a pin inserting hole and a guide pin inserted therein. The object of the present invention is to provide an axis deviation inspection device capable of performing an axis deviation inspection with high accuracy.

[0012]

According to a first aspect of the present invention, there is provided an apparatus for inspecting an axis deviation of a multi-core connector, which comprises two pins for inserting a measuring pin 6 for positioning into a connector housing 1 as shown in FIG. A multi-core connector 4 having a pin insertion hole 2 and a plurality of fiber insertion holes 3 into which optical fibers are inserted is fitted into a connector mounting portion 5 of the inspection device, and the multi-core connector 4 is inserted.
In the axial misalignment inspecting device for a multi-core connector for inspecting the axial misalignment amount of the fiber insertion hole 3 and the optical fiber or the like inserted through the fiber insertion hole 3, the connector mounting portion 5 has two measuring pins 6 for the multi-core connector. 4 are parallel to the two pin insertion holes 2 and are provided at intervals different from the product reference value between the pin insertion holes 2.

According to a second aspect of the present invention, an apparatus for inspecting an axis deviation of a multi-core connector has a connector housing 1 as shown in FIG.
Two pin insertion holes 2 into which positioning measuring pins 6 are inserted, and a plurality of fiber insertion holes 3 into which optical fibers are inserted
The multi-core connector 4 in which the and are formed is fitted into the connector mounting portion 5 of the inspection device, and the axial deviation amount of the fiber insertion hole 3 of the multi-core connector 4 and the optical fiber or the like inserted through the fiber insertion hole 3 is measured. In a multi-core connector axis deviation inspection device to be inspected, two connector pins 5 are provided with two measuring pins 6 tilted in the axial direction.

[0014]

In the axial misalignment inspection device for a multi-core connector according to claim 1 of the present invention, the two measuring pins 6 are parallel to the two pin insertion holes 2 of the multi-core connector 4 in the connector mounting portion 5. Since the pin insertion holes 2 are provided at intervals different from the product reference value, when the measurement pins 6 are inserted into the pin insertion holes 2 of the multi-core connector 4, the measurement pins 6 are inserted into the pin insertion holes 2. It bends and there is no substantial clearance between the measuring pin 6 and the pin insertion hole 2. Therefore, the multi-core connector 4
Is accurately positioned on the connector mounting portion 5, and a highly accurate axis deviation inspection can be performed. Also,
Even if many of the multi-core connectors 4 to be measured are individually replaced with the connector mounting portions 5, there is little variation in the mounting, so the reproducibility of the axis deviation inspection is good.

According to the second aspect of the present invention, in the apparatus for inspecting axis deviation of a multi-core connector, two measuring pins 6 are provided on the connector mounting portion 5 so as to be inclined in the axial direction thereof. Pin 6 for the multi-core connector 4 and the pin insertion hole 2
When the measurement pin 6 is inserted into the pin insertion hole 2, the measurement pin 6 bends in the pin insertion hole 2 and there is substantially no clearance between the measurement pin 6 and the pin insertion hole 2. Therefore, the multi-core connector 4 is accurately positioned on the connector mounting portion 5, and a highly accurate axis deviation inspection can be performed. Also,
Even if many of the multi-core connectors 4 to be measured are individually replaced with the connector mounting portions 5, there is little variation in the mounting, so the reproducibility of the axis deviation inspection is good.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The axis deviation inspection device of the present invention will be described in detail with reference to FIGS. In FIG. 1, 12 is a light source, 5 is a connector mounting portion, 11 is a multicore fiber attached to a reference connector 18, 13 is a multicore fiber attached to a multicore connector 4 for measurement, 14 is an optical system, and 21 is Insertion position detection system,
Reference numeral 15 is a position detection sensor, 20 is a fiber moving stage for moving the multi-core fiber 13 in a horizontal direction parallel to the optical axis, 21b is a photodiode, and 16 is a horizontal position where the position detection sensor 15 is orthogonal to the optical axis. The sensor moving stage 17 that moves in the direction is an arithmetic unit (ECU) that stores the position of each emitted light detected by the position detection sensor 15 and calculates the axial deviation amount.

As the light source 12, a uniform and stable light source is used so that the intensity distribution of the inspection light emitted from the reference connector 18 and the multicore connector 4 for measurement becomes uniform.

The insertion position detection system 21 is a substrate 21a having a photodiode 21b and a pinhole 21c formed therein.
The photodiode 21b is arranged on the same optical axis as the pinhole 21c so that the light amount of the light passing through the pinhole 21c can be detected. The pinhole 21c is a light source emitted from the multi-core connector 4 to be measured. It is arranged at the point where the inspection light from 12 forms an image, that is, at the point where the light amount of the inspection light from the light source 12 emitted from each multicore connector 4 is maximized in the photodiode 21b.

As shown in FIG. 7, the reference connector 18 has two pin insertion holes 2 for inserting the positioning measuring pins 6 into the connector housing 1 and a plurality of fiber insertion holes 3 for inserting the optical fibers. Is formed, and the optical fiber core wire of the multi-core fiber 11 is inserted and fixed in the fiber insertion hole 3. Also, the butted end surface 4 of the reference connector 8
The end surface a is polished together with the end surfaces (butt end surfaces) of the plurality of optical fiber core wires.

The multi-core fiber 11 is a tape fiber in which a plurality of optical fiber core wires are coated with a synthetic resin. The multi-core fiber 11 is cut into mirrors by removing the coating on one end in the longitudinal direction by a cutter, and then separated into optical fiber cores 11a as shown in FIG. It is inserted into the insertion hole 3 and fixed with an adhesive.

Similar to the reference connector 18 shown in FIG. 7, the multi-core connector 4 for measurement has two pin insertion holes 2 for inserting the measurement pins 6 for positioning in the connector housing 1 and an optical fiber. A plurality of fiber insertion holes 3 to be inserted are formed.

This multi-core connector 4 has a multi-core fiber 13
The optical fiber core wire 13a is inserted and removed by operating the fiber stage 20. This fiber stage 2
As shown in FIG. 3, the holding block 20a holding the multi-core fiber 13 is moved forward by the drive cylinder 20b as shown in FIG.
While guiding the optical fiber a (FIG. 2), the optical fiber core wire 13a is inserted into the fiber insertion hole 3 of the multi-core connector 4 mounted on the connector mounting portion 5, and the drive cylinder 20b is retracted to thereby guide the optical fiber core wire. 13a can be removed from the fiber insertion hole 3 of the multicore connector 4.

The optical system 14 shown in FIG. 1 includes coupling lenses 14b and 1b.
4c and a plurality of prisms 14a, the reference connector 18, and the inspection light from the light source 12 emitted from the multi-core connector 4 to be measured, as shown by the alternate long and short dash line in FIG. An image is formed on the position detection sensor 15 and the pond hole 21a.

The connector mounting portion 5 is the reference connector 1
8 and the fitting portion 5 for fitting the multi-core connector 4 to be measured
a and 5b are provided so as to be separated from each other for a predetermined time, and the fitting portions 5a and 5a are provided.
b, as shown in FIGS. 4 and 6, each reference connector 18,
Two V-shaped grooves 23 for fixing the measuring pins 6 for positioning the multi-core connector 4 are formed.

The two V-grooves 23 shown in FIG. 6 are formed parallel to each other as shown in FIG. 5, and are formed between the two pin insertion holes 2 of the multi-core connector 4 at intervals larger than the product reference value. In the two V grooves 23, the multi-core connector 4 and the reference connector 1
The two measuring pins 6 for positioning the
Is inserted and fixed so as to project from the tip surface 5a of the connector mounting portion 5 by about 5 mm. Accordingly, when the multi-core connector 4 and the reference connector 18 to be measured in the fitting portions 5a and 5b are mounted, the pin insertion holes 2 of the respective connectors 4 and 18 are spaced apart from each other by a distance larger than the two pin insertion holes 2. When the measuring pin 6 of the book is inserted, the measuring pin 6 bends in the pin insertion hole 2 and there is no substantial clearance between them, and the measured multi-core connector 4 and the reference connector 18 are fitted into the connector. The joints 5a and 5b are accurately positioned.

FIG. 4 shows the connector fitting portions 5a and 5b of the present invention.
Another example of The connector fitting portions 5a and 5b are provided with two V grooves 23 for fixing the multi-core connector 4 to be measured and the measuring pin 6 for positioning the reference connector 18,
Moreover, the two V-grooves 23 are inclined so as to expand outward in the width direction, and when the two measuring pins 6 are inserted into the two V-grooves 23, the tips 6a of the two measuring pins 6 are expanded outward. I am doing it. Further, the measuring pin 6 has a tip portion 6a.
Is inserted and fixed in the V groove 23 so as to project about 5 mm from the tip surface 5a of the connector mounting portion 5.

As described above, when the two measuring pins 6 are spread outward in the width direction and inclined, the multicore connector 4 and the reference connector 18 to be measured are attached to the fitting portions 5a, 5b. When the measuring pin 6 is inserted into the pin insertion hole 2 of each of the connectors 4 and 18, the measuring pin 6 tilts with respect to the pin insertion hole 2, so that the measuring pin 6 bends in the pin insertion hole 2. . Therefore, the connectors 4 and 18 are fitted to the fitting portions 5a and 5b.
Accurately positioned, highly accurate measurement is possible, and reproducibility of measured values is improved even if the connector is replaced and repeated measurement is performed.

Here, the total length of the measuring pin 6 is LA (= 1
1 mm), the inner diameter of the pin insertion hole 2 of the connector into which it is fitted is D (= 0.700 mm), and the outer diameter of the measurement pin 6 is d (= 0.69 mm), the measurement pin 6 and the pin insertion A clearance of 1 μm, which is the difference in diameter between the two, is generated between the holes 2. Therefore, when the reference connector 18 and the multi-core connector 4 are attached to the fitting portions 5a and 5b and the measurement pin 6 is inserted into the pin insertion hole 2, the tip portion 6a of the measurement pin 6 is inserted.
Is in contact with the inner wall of the pin insertion hole 2, the measuring pin 6 needs to be slightly inclined with respect to the pin insertion hole 2, and the inclination is at least (D−d) / LA, that is, 1/11000. Becomes

Therefore, the fitting portion 5a of the connector mounting portion 5,
5b, if the measuring pin 6 is tilted beyond the above value, or if the measuring pin 6 is fixed in the pin insertion hole 2 so as to have a tilt exceeding the above value, the measuring pin 6 will increase the The core connector 4 and the reference connector 18 are the fitting parts 5
Substantial axis misalignment between the center of the measurement pin 6 and the center of the pin insertion hole 2 does not occur in a and 5b, and highly accurate axis misalignment measurement of the fiber insertion hole can be performed.

Here, in each connector fitting portion 5a, 5b, as shown in FIG. 4, of the pin insertion hole 2 of the tip portion 6a of the measuring pin 6 that protrudes ahead of the tip surface 5a of the connector mounting portion 5. The length is L1 (= 5 mm), and the amount of axial deviation of the measuring pin center between the tip of the measuring pin 6 on the side to be inserted into the pin insertion hole 2 and the abutting end faces of the multi-core connector 4 and the reference connector 18 is α. Then, the axis deviation amount α (μm) is α = L1 · (D−d) / La, that is, α≈
It becomes 0.45 μm.

Therefore, the measuring pins 6 are inclined outward or inward in the width direction of the two measuring pins 6 so as to have an axial deviation of at least 0.45 μm from the central axis of the measuring pin at the end face abutting with the connector. Alternatively, the distance between the two measuring pins 6 should be the distance P between the pin insertion holes 2 of the connector.
A (= 4600 μm) to at least 2α (= 2 × 0.
It is necessary to fix them at different intervals of 45 μm), and this interval P (μm) is obtained from the following equation. P ≦ PA-2α or P ≧ PA + 2α

Therefore, the multi-core connector 4 and the reference connector 1
The distance PA between the two pin insertion holes 2 is 8600μ
If m, then P ≦ 4599.1 μm or P ≧ 4 from the above equation
It becomes 600.9 μm. The center of the interval P between the two measuring pins 6 is the same position as the interval PA between the pin insertion holes 2 of the multi-core connector 4 and the reference connector 18, and the two measuring pins 6 are
Must be symmetrical in the plane with respect to its center.

In the description of the case where the measuring pin 6 is inclined, the case where the measuring pin 6 is inclined in the plane has been described for the sake of simplicity. However, in the present invention, the measuring pin 6 has three axes. It also applies when tilted in the direction.

The above are theoretical numbers, and the diameters of the pin insertion holes 2 of the multi-core connector 4 and the reference connector 18, which are actually measured, and the intervals between the two pin insertion holes 2 have manufacturing variations. However, the measuring pin 6 made of stainless steel or a ceramic material is easily bent by about 1 μm in the range of the gap formed between the measuring pin 6 and the pin inserting hole 2, so that the pin inserting hole 2 of the multi-core connector 4 and the reference connector 18 is bent. Measuring pin 6 to
It is possible to guide the taper portion of the tip end portion 6a of the measuring pin 6 so that it can be easily inserted, and it is possible to absorb variations in the manufacturing accuracy of the connector.

As can be seen from the above-mentioned embodiment, when the measuring pin 6 is inclined, the inclination of (D-d) / LA is guaranteed for the measuring pin 6 as described above, and When the distance is changed, the measuring pin 6 is inserted into the pin insertion hole 2 as described above.
If the center axis of the measuring pin 6 at the tip of the measuring pin 6 and the abutting end face 4a of the multi-core connector 4 with the tip of the measuring pin 6 is assured to be α, the multi-core The connector is accurately positioned by the measuring pin 6 inserted into the pin insertion hole 2.

[0036]

[Example of use] A multi-core connector 4 to which a multi-core fiber 13 of four cores is attached as shown in FIG. 2 using the axis deviation inspection device of the present invention.
The case of inspecting the axis deviation of each optical fiber core wire 13a will be described below. In this case, the multi-core fiber 11 is attached and fixed to the reference connector 18 as shown in FIG. The pin insertion hole 2 of the multi-core connector 4 and the reference connector 18 has a hole diameter of 0.700 mm.
The spacing at 8 is 4600 μm. Also, the fitting part 5
The measurement pin 6 in a and 5b has a pin diameter of 0.699 mm
And fixed in parallel to the fitting portions 5a and 5b with a gap of 4602 μm.

First, the measuring pin 6 of the connector mounting portion 5 is fixed in the V groove 23, and the reference connector 18 is mounted on one fitting portion 5a of the connector mounting portion 5 as shown in FIG.

Next, the inspection light is incident on the first optical fiber core wire 11a of the multicore fiber 11 attached to the reference connector 18. This inspection light passes through the optical system 14 and forms an image on the position detection sensor 15, and the spot position is detected. Then, the spot position of the inspection light detected by the position detection sensor 15 is stored in the arithmetic unit 17 as coordinate values based on preset X and Y axes. The value at this time is, for example, (PXM1, PYM1).

Similarly, the second, third, fourth. ． ． All optical fiber cores 11 in this order
The inspection light is incident on a, and the spot position (PXM2, PYM2) of the inspection light detected by the position detection sensor 15 (P
XM3, PYM3) and (PXM4, PYM4) are stored in the arithmetic unit 17.

Thereafter, the reference connector 18 is replaced with the other fitting portion 5b of the connector mounting portion 5, and the multicore fiber 1 is replaced.
The same operation as described above is repeated for each optical fiber core wire 11a. Thus, the spot positions (PXS1, PYS1) of the inspection light detected by the position detection sensor 15 and (PX
S2, PYS2), (PXS3, PYS3), (PXS
4, PYS4) are sequentially stored in the arithmetic unit 17.

At this time, since the position detecting sensor 15 has a small light receiving area, the sensor moving stage 16 is moved by a predetermined amount each time the optical fiber core wire 11a to be inspected is changed so that the spot position of the inspection light is on the light receiving surface. Adjust so that it is located approximately in the center. From the spot positions thus obtained, the values relating to ΔPX and PY expressed by the following equations are calculated by the arithmetic unit 17 and stored.

ΔPX1 = PXS1-PXM1, ΔP
Y1 = PYS1-PYM1 ΔPX2 = PXS2-PXM2, ΔPY1 = PYS
1-PYM2 ΔPX3 = PXS3-PXM3, ΔPY1 = PYS
1-PYM3 ΔPX4 = PXS4-PXM4, ΔPY1 = PYS
1-PYM4

Here, in the optical system 14, the reference connector 18 and the multi-core connector 4 originally attached to the fitting portions 5a and 5b of the connector attaching portion 5 by the plurality of prisms 14a and the imaging lens 14b. The inspection light is adjusted so as to pass through the same optical path. However, even in such a case, there is a slight deviation in the optical path. Therefore, the PX1 to PX4 and PY1 to PY4 represented by the above formula are the fitting portion 5
Reference connector 18 attached to a and 5b, multi-core connector 4
The amount of axis deviation caused by the optical system 14 is shown.

The number of cores of the multi-core fiber 11a is different,
For example, in the case of the core wire n, the final spot positions are (PXMn, PYMn) at the fitting portion 5a and the fitting portion 5b,
(PXSn, PYSn), and the equations for ΔPX and ΔPY are as follows. ΔPXn = PXSn−PXMn, ΔPYn = PYSn
-PYMn

Next, the measurement of the multi-core connector 4 is started.
At this time, as shown in FIG. 1, the reference connector 18 is attached to one fitting portion 5a of the connector attaching portion 5, and the multi-core connector 4 is attached to the other fitting portion 5b.

After that, the mirror surface is cut and the fiber core wire 1
One end side of the multicore fiber 13 separated for each 3a is attached to the holding block 20a (FIG. 3) of the fiber stage 20. At this time, the other end of the multi-core fiber 13 is previously connected to the light source 12
It is connected to the.

Next, by operating the fiber stage 20,
A plurality of fiber core wires 13a are collectively inserted into the corresponding fiber insertion holes 3 of the multi-core connector 4 while passing light from a predetermined core wire, and the light extracted from the optical system 14 is focused on the lens 14c. The amount of incident light on the photodiode 21b is read through the pinhole 21a attached to the surface, and the end face of each fiber core wire 13a is positioned by the abutting end face 4a of the multi-core connector 4.

Then, in the same manner as described above, the inspection light transmitted through the optical fiber cores 11a and 13a is sequentially detected by the position detection sensor 15, the spot position of each inspection light is obtained, and the arithmetic unit (ECU) I will remember it in 17.

Here, for example, the spot position of the first optical fiber core wire 11a on the reference connector 18 and the spot position of the first optical fiber core wire 13a of the multi-core connector 4 are respectively (XM1, YM1), (XS
1, YS1).

Then, the relative axis deviation amounts ΔX1 and ΔY1 with respect to the X axis and the Y axis of the second optical fiber core wire 13a with respect to the first optical fiber core wire 11a are calculated by the following equation by the arithmetic unit 17. ΔX1 = (XS1-XM1) -ΔPX1 ΔY1 = (YS1-YM1) -ΔPY1

In the same manner, the relative axis deviations ΔX2, ΔX3, ΔX4 and ΔY are similarly applied to the other fiber cores.
The calculation device 17 calculates 2, ΔY3, and ΔY4.
In this way, the amount of relative axis deviation between each optical fiber core wire 13a and the corresponding optical fiber core wire 11a can be obtained.

When the axial misalignment of the multi-core connector 4 was measured using the connector axial misalignment inspection device of the present invention, the measurement reproducibility in the axial misalignment inspection of each fiber core wire 11a, 13a was 0.1 μm or less submicron. Got it on order.
Therefore, when performing the axis deviation inspection of the optical connector, it is very effective to position the multi-core connector 4 to be measured on the connector mounting portion 3 of the axis deviation inspection apparatus for connectors of the present invention.

Although the above description is an example of the axis deviation inspection method using the connector axis deviation inspection apparatus of the present invention, the present invention is not limited to the above inspection method. In the axial displacement inspection of the optical connector, it can be applied to various inspections as long as the optical connector is positioned with the measuring pin 6 as a reference.

[0054]

According to the connector axis deviation inspection apparatus of the present invention, the measuring pin 6 inserted into the pin insertion hole 2 has the pin insertion hole 2 formed therein.
Since the position of the measuring pin 6 is uniquely determined by bending inside the
Since the reference connector 18 and the multi-core connector 4 to be measured are accurately positioned in the connector mounting portion 5 of the detection device and the reproducibility of the measured value is improved by repeated mounting, the optical fiber after insertion of the fiber in the optical connector and the inserted optical fiber The axis deviation of can be inspected with high accuracy.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a connector axis deviation inspection device of the present invention.

FIG. 2 is a schematic view of the vicinity of the connector mounting portion in the connector axis deviation inspection device of the present invention.

FIG. 3 is a side view showing an insertion stage for inserting an optical fiber into a ferrule and showing a connector mounting portion in a section.

FIG. 4 is a plan view showing an example of a connector mounting portion in the connector axis deviation inspection device of the present invention.

FIG. 5 is a plan view showing another example of the connector mounting portion in the connector axis deviation inspection device of the present invention.

FIG. 6 is a vertical cross-sectional view of a connector mounting portion in the connector axis deviation inspection device of the present invention.

FIG. 7 is a perspective view of a reference connector and a multicore connector for measurement in the connector axis deviation inspection device of the present invention.

FIG. 8 is a perspective view of a conventional multicore connector for measurement.

[Explanation of symbols]

 1 Connector housing 2 Pin insertion hole 3 Fiber insertion hole 4 Multi-core connector 5 Connector mounting part 6 Measurement pin

Claims (2)

[Claims] 1. A multi-core connector (4) having two pin insertion holes (2) and a plurality of fiber insertion holes (3) formed in a connector housing (1) is a connector mounting portion (5) of an inspection device. In a fiber insertion hole (3) of the multi-core connector (4) and an axis deviation amount of the optical fiber or the like inserted in the fiber insertion hole (3), , The connector mounting part (5) has two measuring pins (6) parallel to the two pin insertion holes (2) of the multi-core connector (4) and the product reference value between the pin insertion holes (2) A misalignment inspection device for a multi-core connector, characterized in that it is provided at a different interval. 2. A multicore connector (4) having two pin insertion holes (2) and a plurality of fiber insertion holes (3) formed in a connector housing (1), and a connector mounting portion (5) of an inspection device. In a fiber insertion hole (3) of the multi-core connector (4) and an axis deviation amount of the optical fiber or the like inserted in the fiber insertion hole (3), An apparatus for inspecting misalignment of a multi-core connector, characterized in that two connector pins (5) are provided with two measuring pins (6) tilted in the axial direction.